Incrustation-preventive



UNITED STATES PATENT rrrcn,

JOHN MULLIOA AND BENJAMIN F. MULLICA, OF W'ILLIAMSTOVJ N ASSIGNORS OF ONE-HALF TO JONATHAN P. STANGER AND HENRY ROW'E-N, BOTH OF GLASSBOBOUGH, NEV JERSEY.

lNCRUSTATlON-PREVENTIVE.

SPECIFICATION forming part of Letters Patent No. 380,340, dated April 3, 1888.

Application filed April 20, 1857. Serial No. 235,522.

To all'whom it may concern:

Be it known that we, JOHN MULLIcA and BENJAMIN F. MULLIOA, citizens of the United States, residing at lrVilliamstowmin the county of Gloucester and State of New Jersey, have invented a new and useful Improvement in Compounds, of which the following is aspecification.

Our invention relates to a compound for use to in connection with steam-boilers; and it consists in the ingredients and their proportions, which will be more fully hereinafter described, and pointed out in the claim.

Theintended use of ouriiuproved compound 1 5 is in connection with boilers, to'prevent and remove the inerustation in the same, and by its injection into the said boiler will cause the cessation of what is commonly known as foaming.

Our compound consists of the following ingredients, in about the proportions stated:

floured charcoal, two ounces; floured potato starch, twenty-four ounces; floured elm-bark, three ounces; refined sand,twenty-four ounces. The last-named ingredient is preferably refined flint sand, which is burned, ground, washed, and then dried, when it will be found to be as fine as flour. The ingredients, proportioned as stated, are thoroughly mixed together 0 in any suitable vessel and by any suitable means, when the compound will be in condition for immediate use.

To every ten horse-power we dissolve one ounce of the compound in a bucket of water 3 5 and pump the mixed water and the compound into the boiler through the feed-pipe three times a week.

The charcoal and elm abstract from the water in the boiler the alum, salt, lime, phos- 0 phate, magnesia, and other minerals, and the starch softens the water and with the elm coats the iron and assists the refined sand in preventing the adherence of any petrified substance on the iron of the boiler. The petrified (No specimens.)

substance which may have already adhered to the iron by the deposit is also acted upon by the refined sand, which penetrates between the petrified substance and theiron, and finally loosens it from the iron, so that it becomes a floating mass and is blown-oil. By the use of the refined sand the foaming of the boiler will be caused to cease after a short period of usage thereof.

By the use of our compound the iron of the boiler is greatly benefited bya removal there from of deleterious deposits and coagulations of foreign matter which may have become incrusted upon the inner surface of the boiler and its parts. It is obvious that the stated proportions and times may be varied to suit the desired use.

Our preparation of the sandnamely,burning, grinding, washing, and dryingdeprives it almost entirely of grit and renders it very fine and soft, resembling flour; but its pene- 6 trating qualities render it capable of insinuating itself between the boiler and the incrustation thereon, which incrustation it eventually loosens and removes. The other ingredients of the compound are merely aids to the operation of the sand, and may be substituted by other materials, although these are considered the best for the purpose; but we are aware that the said materials, aside from the refined sand, are old as used in this connection, and 7 we do not therefore claim them.

What we desire to claim is merely the combination of sand prepared as above described with other materials to form a compound for the removal of the incrust-ation from the walls of steam boilers, the other materials consisting of chemicals or minerals used as aids or vehicles.

We are aware that calcined, ground, and washed sand is in use as one of the materials 85' in glass-making, and therefore is not a new material, broadly. We lay claim to its special use as a preventive for boiler compounds.

The other ingredients of the compound are all In testimony that We claim the foregoing as old, and it is the use of sand prepared as herein our own we have hereto affixed our signatures set forth that We may lay special claim to. in presence of two witnesses.

Having thus described our invention, We 5 claim JOHN MULLIOA. In a preventive or remover of boiler-incrus- BENJAMIN F. MULLIOA.

tation, sand prepared by burning", grinding,

and washing, combined with floured charcoal, lVitnesses;

floured potato-starch, floured elmbark, or ALBERT P. WILooX, 10 their equivalents, in substantially the propor- WEsLEY D. CHEW.

tions stated, as herein specified. 

